Results 41 to 50 of about 842 (149)

Assessment of parasite virulence in a natural population of a planktonic crustacean

BMC Ecology, 2019
Background Understanding the impact of disease in natural populations requires an understanding of infection risk and the damage that parasites cause to their hosts (= virulence).
Eevi Savola, Dieter Ebert
doaj   +1 more source

Kajian Bioekologi Pasteuria penetrans

Jurnal Perlindungan Tanaman Indonesia, 1996
In bioecological studies of P. penetrans, six experiments were done i.e. study the nematode hosts of P. penetrans; the effect of temperature, soil moisture, spores storage length, soil chemicals (compound  fertilizer, carbofuran, and mancozeb) and methods of application on the pathogenicity of P. penetrans.
Mulyadi, Mulyadi, Triman, B., Rahayu TP, Bambang   +2 more
openaire   +2 more sources

The Role of Host Age at Exposure, Host–Parasite Genetics and Host Size‐Parasite Length Mechanics in Shaping the Outcome of Parasitic Infections in Three Zooplankton Taxa

Freshwater Biology, Volume 70, Issue 8, August 2025.
ABSTRACT Understanding disease emergence and spread is a key challenge of evolutionary ecology, and there is growing evidence that host age at exposure is pivotal for improving our understanding. Previous studies of the Daphnia‐Pasteuria system found that younger hosts were more susceptible and produced more transmission stages than older ones, with ...
Sabrina Gattis, Frida Ben‐Ami
wiley   +1 more source

Adhering Pasteuria penetrans endospores affect movements of root-knot nematode juveniles

Phytopathologia Mediterranea, 2012
Pasteuria penetrans is a biological control agent of root-knot nematodes (Meloidogyne spp.), preventing root invasion by second-stage juveniles (J2s), and eventually causing females sterility and death. greatest control effects for P. penetrans depend on
Ioannis VAGELAS, MIchael DENNETT, Barbara PEMBROKE, Simon GOWEN   +3 more
doaj   +1 more source

A diverse parasite pool can improve effectiveness of biological control constrained by genotype‐by‐genotype interactions

Evolutionary Applications, 2022
The outcomes of biological control programs can be highly variable, with natural enemies often failing to establish or spread in pest populations. This variability has posed a major obstacle in use of the bacterial parasite Pasteuria penetrans for ...
Fabiane M. Mundim, Amanda K. Gibson
doaj   +1 more source

Update of the list of qualified presumption of safety (QPS) recommended microbiological agents intentionally added to food or feed as notified to EFSA 22: Suitability of taxonomic units notified to EFSA until March 2025

EFSA Journal, Volume 23, Issue 7, July 2025.
Abstract The qualified presumption of safety (QPS) process was developed to assess the safety of microorganisms used in food and feed chains. During the period covered by this Statement, no new information warranted changes to the status of previously recommended QPS taxonomic units.
EFSA Panel on Biological Hazards (BIOHAZ), Ana Allende, Avelino Alvarez‐Ordóñez, Valeria Bortolaia, Sara Bover‐Cid, Alessandra De Cesare, Wietske Dohmen, Laurent Guillier, Liesbeth Jacxsens, Maarten Nauta, Lapo Mughini‐Gras, Jakob Ottoson, Luisa Peixe, Fernando Perez‐Rodriguez, Panagiotis Skandamis, Elisabetta Suffredini, Pier Sandro Cocconcelli, Pablo Salvador Fernández Escámez, Miguel Prieto Maradona, Amparo Querol, Lolke Sijtsma, Juan Evaristo Suarez, Marianne Chemaly, Ingvar Sundh, Fulvio Barizzone, Justine Dastouet, Nadya Doyle, Sandra Correia, Lieve Herman   +28 more
wiley   +1 more source

Occurrence and integrated control of major rice diseases in China

New Plant Protection, Volume 2, Issue 2, June 2025.
Rice is constantly under threat from a variety of pathogens. This review highlights the major diseases affecting rice in China, including three fungal diseases, two bacterial diseases, two viral diseases, and one nematode. The review also proposes future directions for an integrated approach to control these significant rice diseases.
Ruyi Wang, Zhiyuan Ji, Yanjun Kou, Xiuling Yang, Wenkun Huang, Zongtao Sun, Shimin Zuo, Zhiqiang Li, Yehui Xiong, Yiwen Deng, Xueping Zhou, Guo‐Liang Wang, Jie Liu, Yuese Ning   +13 more
wiley   +1 more source

Studying the genetic basis of ecological interactions with intergenomic epistasis

Oikos, Volume 2025, Issue 6, June 2025.
In a community, the phenotype or fitness of genotypes of a focal species can depend on the genotypes of other species. Such between‐species genetic interactions are increasingly referred to as intergenomic epistasis, analogous to the classical definition of (intragenomic) epistasis in genetics.
Loraine Hablützel, Claudia Bank
wiley   +1 more source

Patchy Distribution of Potato Cyst Nematodes Within Single Arable Fields Reveals Local Disease Suppressiveness Mediated by Disparate Microbial Communities

Environmental Microbiology, Volume 27, Issue 5, May 2025.
We investigated whether a patchy field distribution of potato cyst nematodes (PCN) resulted from local heterogeneity in disease suppression. The biotic origin of suppression in soils was confirmed, and elevated abundances of fungal (e.g., Metacordyceps chlamydosporia) and bacterial (e.g., Pseudomonas fluorescens) nematode antagonists were positively ...
Robbert van Himbeeck, Stefan Geisen, Casper van Schaik, Sven van den Elsen, Roeland Berendsen, André Bertran, Egbert Schepel, Johannes Helder   +7 more
wiley   +1 more source

The soil bacterium Lysobacter capsici attaches to the nematode surface, and triggers induced systemic resistance in barley, impairing the invasion of root‐lesion nematodes

Oikos, Volume 2025, Issue 4, April 2025.
Root‐lesion nematodes pose a global threat to crop yield and stability, with their broad host range presenting a formidable challenge for effective management. In this study, we investigated the role of the nematode‐attached bacterium Lysobacter capsici in mitigating the invasion of Pratylenchus penetrans into spring barley roots.
Ahmed Elhady, Olivera Topalović, Holger Heuer   +2 more
wiley   +1 more source